I just received my HH back today after having the #3 zipper mod...I am REALLY impressed. The workmanship is perfect. All my emails were answered promptly, and the turnaround time was very fast. It really makes a differance in using the HH. I would recommend that anyone with a HH have one of their three mods done, you will not regret it. They even sent me back a dollar...since I had sent in one dollar too much for the return shipping. Now that is honesty.